Reinforced cement block.



110.843.324. PATBNTBD ma. 5, 1907. n. J. Bnooxs.

RBINFOBCBD CEMENT BLOCK.

Annunci nun un. 1a. 1m.

fication as part thereof.

UNITED STATES PATENT OFFICE.

REINFORCED CEMENT BLOCK.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application tiled April 16. 1906. Serial No 811.890.

To @ZZ whom it may concern: E

Be it known that I, EDWARD J. BROOKS, a g citizen of the United States of America, and I a resident of East Orange, in the State of f New Jersey, have invented a new and useful Improvement in Reinforced Cement Blocks, of which the following is a s ification.

This invention relates to t e production of reinforced blocks of artificial stone or cement, as the material is hereinafter termed 5 if and the present invention consists in the novel roduct hereinafter described and g claimeei.

The objects of the invention are to provide forma vsuchblockshollow, so as to lighten j them, an for strengtheni v them by means i of reinforces which bridge t e we'vht-reduc- ,j ing recesses and assist in inseparab v attaching solid side portions and at the same time i for making the blocks with unbroken sides to contact with-the mortar joints of the walls in which they are laid.

A sheet of drawings accompanies this speci- Figures l, 2, and 3 are perspective views illustrating the process of moldingahollow reinforced building-block according to the resentinvention. Fig. 4 is a face view o the finished block. Fig. 5 re resents a section on the line A B, Fig. 4. ig. 6 represents a like sectional view of another block embodyg ingthe same invention in part; and Fig. 7 is a perspective view, partly in dot-ted outline, illustrating a third species of the same invenf non- Like reference characters refer to like parts in all the gures.

The improved cement block in all its forms includes a hollow portion a or a3 or a, formed l with the aid of a core or cor in customary manner, but with the recess or recesses 1 or 2 or 3 vertical in the mold, a reinforce b or bz or i b1, ada ted to bridge the open upper side of 1 the hollow portion in its ,green or wet. condition and to embed itself therein, and a solid side portion c or c* or c in contact with said open side of the hollow portion and insepag rably attached to said hollow portion and said reinforce.

In the species illust-rated by Figs. 1 to 5, inclusive, a solid face portion or outer side d with any desired surface or configuration (represented in Fig. 4) is first molded and may be of a dierent composition from the remainder of the block, as represented by the l per side of each recess. Such bridge-forml xo heavier hatching in Fig. 5. While said face portion d is wet or green and otherwise in suit-able condition the cores for the hollow portion a are placed thereon, and said hollow portion a is molded in contact with said face portion d and inseparably attached thereto.

g After withdrawing the core or cores the reinforce b is laid upon the top of the hollow portion a while said hollow portion is still wet or n and in proper condition, and the solid ack portion c is immediately molded upon the hollow portion a and reinforce b, so as to be inseparablyr attached to both, which ma;v complete the molding operation. In the species illustrated by Fig. 6 said face portion d is omitted, and the hollow portion a has an open side which may be laid toward the air-space of a hollow wall. In the species represented by Fig. 7 the block may be constructed with or without a face portion.

The reinforce b (represented in Figs. 2 and 5) is of wire netting. The reinforce 2 (represented in Fig. 6) is of expanded metal. The

reinforce b (represented in Fig. 7) is composed of rods laid side by side in sufficient number to bridge the weight-reducing recess. It will be obvious that either form of reinforce may be used in any of the species or other suitable forms adapted to bridge the weight reg ducing recesses 1, 2, and 3. It will also be obvious that said recesses l, 2, and 3 may be of any desired shape and number and that their number and proportions are determined by the dimensions of the block and the quantity of material that can be omitted from the interior of the block without. injurig Eousl) affecting its reslst-ance to crushing strains.

The shape and proportions of the block ma;Y of course vary indefinitely, and other -like modifications will suggest themselves to those skilled in the art.

The broad idea of embedding metallic reinforces within hollow cement blocks is not claimed herein, as it is old. The distinctive characteristics of the improved blocks herein claimed is that the reinforces are adapted to bridge the recesses in the process of molding the blocks, as hereinbefore described, and in the finished product, and thus greatly facilitate their incorporation in the hollow blocks, especially blocks closed on all sides,

and are located in the plane of what was in the mold and is hereinafter termed the up- ICG IOS

ing reinforces incorporated within hollow of the upper side of each recess and a solid 1o cement blocks are believed to be broadly new portion in contact wit-l1 and inseparably atand are intended to be so claimed. tached to said hollow portion and said rein- Having thus described said improvement, force substantially as hereinbefore specified. 5 I claim as my invention and desire to patent EDW XRD J BROOKS underthis specicat-ion- 5 A reinforced cement block .including a Witnesses: hollow portion containing one or more re- W. M. BRooxs, cesses, abridge-forming reinforceinthe plane i ELINoR BROOKS. 

